Water-cooled generator spray nozzle



Juy E?, E195@ P. u.. @moms l WATER COOLED GENERATORv SPRAY NOZZLE Filed Nov. l5, 1949 /Nz/z-/v TUR PERCY L SYMONS Patented `uly 17, 1951 WATER-COOLED GENERATOR SPRAY N OZZLE Percy L. Symons, Portland, Oreg., assignor to Albina Engine & Machine Works, Inc., a corporation Application November 15, 1949, Serial No. 127,450

2 Claims.

This invention relates generally to the art of making gas from fuel oils and particularly to a water cooled generator spray nozzle.

The main object of this invention is to produce a water cooled tip wherewith oil can be sprayed into a cracking tower in which the spraying tip is subjected to relatively high temperatures.

The second object is to construct a spray nozzle which will be easy to fabricate and which is made up of steel tubing and cast sections united by a welding process.

These and other objects are accomplished in the manner set forth in the following specifications as illustrated in the accompanying drawings, in which:

Fig. 1 is a longitudinal section taken along the line I-I in Fig. 2, through a tip showing it mounted on an oil pressure pipe and its cooling water connections.

Fig. 2 is a section along the line 2-2 in Fig. 1.

Fig. 3 is a section along the line 3-3 in Fig. 1.

Fig. 4 is a fragmentary perspective View of the nozzle with parts broken away in section.

Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawing, there is shown an internal steam pipe I to which high pressure steam is supplied from a source not shown. Threaded on the pipe I0 is a tubular core Il having three short radial centering ribs I2, I3 and I4 formed along the discharge end thereof and a circular ange I5 forming the inlet end of the nozzle. There are also formed along the core I I, the radial ribs I6 which extend outside the surface l1 of the flange I5.

A steel shell i8 is wrapped around the core Il and rests upon the flange I5 and the short ribs l2, I3 and Ill and it is secured to the ribs I6 and flange I5.

A separate curved plate I9 covers the space 2li between the ribs I6, to which cold water is admitted from a pipe 2l through the hole 22.

The space 23 around the core II on both sides of the space 2i! communicates through the duct 25.4 with the space 23 through which the heated water escapes through the hole 25 into which is threaded the hot water return pipe 26.

The end 2l is inclined somewhat with relation to the aXis of the nozzle.

It will be noted that the shell I8 and curved plate I9 extend to the welds 28 at the cast head portion 29. A circular row of outlet ports 30 connect the chamber 3| with the exterior of the nozzle through the end 2'I.

Extending from the steam pipe I0 is an oil supply pipe 32 whose enlarged end 33 is provided with holes 3d through which steam passes from the pipe Ill, through the space 35 into the chamber 3|, The end 33 is threaded into the portion 35 of the core II.

No attempt is made to show the details of the cracking chambers and piping for oil, water and steam, as their use is well understood.

Attention is drawn to the fact that all of the cooling water entering the nozzle through the pipe 2l must pass through the end 21 which projects into the retort and is subjected to the greatest heat.

After the water has absorbed its heat from the small end zone, it spreads out around the space 23 and makes it way more leisurely to the outlet pipe 26.

It can be seen that by combining the cast and wrought sections, it is possible to construct a form of nozzle especially adapted for use under the severe conditions found in gas cracking equipment.

In practice the nozzle projects horizontally into a cracking tower lined with refractory material with only the inclined cast portion of the nozzle extending into the zone of greatest heat.

I claim:

l. A generator spray nozzle consisting of a cast cylindrical core having an outwardly flanged end, and having a pair of radial ribs joined to said anged end, a wrought steel shell secured around said core and spaced therefrom forming two unequal separated water jackets around said core, one of said ends having a duct therethrough connecting said jackets, said duct containing end having a plurality of outlet spray forming ports communicating with the interior of the nozzle, a high pressure steam pipe threaded into the opposite flanged end, an oil pipe within said steam pipe and a vaporizing tip on said oil pipe threaded into the outlet end of said nozzle and spaced from said outlet ports.

2. A spray nozzle comprising a tubular cast core having an outwardly flanged open end and having a closing head formed at the other end exceeding the diameter of said core, said head having its extreme end inclined with relation to the axis of the core, said head having a duct formed along its inclined end so that the duct is also inclined with relation to the core axis and having its inlet and outlet ends arcuate in form and disposed close to said core, said closed end having a chamber formed therein having outlet ports therein on opposite sides of said duct,

of radial ribs extending from said flange to said head on opposite sides of the duct inlet and forming thereby a cold Water inlet duct While the balance of the space between said core and shell forms -awwaterfreturn duct;V a 'steam :ppeconnested, to theloutwardly flanged end, and oil pipe within said steam pipe spaced therefrom and connected with said chamber, the end of said oil pipe having holes therein communicating with said steam pipe.

PERCY L. SYMONS.

4 REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date l1952372 'v-Speer FMa. 15, 1910 11,232,756 1' Best "July 10, 1917 1,451,063 Anthony Apr, 10, 1923 10 ,-.l1,468,370 Morse Sept. 18, 1923 ..-1,966,223 kSass July 10, 1934 

